CVE-2026-53531

MEDIUMPre-NVD 6.96.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 76% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
6.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.9Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

RaTeX is a KaTeX-compatible math rendering engine written in Rust. Prior to version 0.1.11, RaTeX’s recursive-descent parser recurses one (or more) native stack frame per nesting level at {, \left, \sqrt{, ^{, etc, with no maximum depth limit. A short, ~10 KB input of nested groups overflows the 8 MB main-thread stack and aborts the process. With panic = "abort" (Cargo.toml:48), and because a Rust stack overflow is always a fatal SIGABRT regardless of panic strategy this is an unrecoverable, whole-process denial of service reachable from a single untrusted LaTeX string. Version 0.1.11 fixes the issue.

CVSS v3
6.9
EG Score
6.9(medium)
EG Risk
62(Attend)
EG Risk 62/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity69% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

July 7, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Aug 21, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Unbounded parser recursion → stack overflow (process abort) · Advisory · erweixin/RaTeX · GitHub

https://github.com/erweixin/RaTeX/security/advisories/GHSA-4w5h-hx6r-28q7

Vendor Advisories for CVE-2026-53531(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
crates.io(1)
PackageVulnerable rangeFixed inDependents
ratex-parser—0.1.11—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 05:48 UTCEG score recompute
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-14 11:19 UTCEG score recompute
  6. 2026-09-13 16:47 UTCEPSS rescore
  7. 2026-09-13 08:29 UTCEG score recompute
  8. 2026-09-12 03:41 UTCEG score recompute
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-10 09:35 UTCEPSS rescore
  11. 2026-09-09 22:57 UTCEG score recompute
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-07 16:01 UTCEPSS rescore
  14. 2026-09-06 13:47 UTCEPSS rescore
  15. 2026-09-05 22:53 UTCEG score recompute
  16. 2026-09-04 05:06 UTCEPSS rescore
  17. 2026-09-02 14:12 UTCEPSS rescore
  18. 2026-09-01 13:54 UTCEPSS rescore
  19. 2026-09-01 04:40 UTCEPSS rescore
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-30 07:40 UTCEG score recompute
  22. 2026-08-30 01:22 UTCEPSS rescore
  23. 2026-08-28 21:41 UTCEPSS rescore
  24. 2026-08-28 04:30 UTCEG score recompute
  25. 2026-08-27 14:25 UTCEPSS rescore
Show 15 more
  1. 2026-08-27 01:51 UTCEG score recompute
  2. 2026-08-26 14:46 UTCEPSS rescore
  3. 2026-08-25 17:26 UTCEG score recompute
  4. 2026-08-25 17:03 UTCEG score recompute
  5. 2026-08-25 13:49 UTCEPSS rescore
  6. 2026-08-25 06:21 UTCEG score recompute
  7. 2026-08-23 00:43 UTCEG score recompute
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-21 22:27 UTCEG score recompute
  10. 2026-08-21 21:40 UTCEG score recompute▲ 6.90
  11. 2026-08-21 21:39 UTCMITRE cvelistV5CVSS v3 → 6.9 · CVSS v4 → 6.9
  12. 2026-08-02 04:11 UTCEG score recompute
  13. 2026-07-26 12:34 UTCEG score recompute
  14. 2026-07-23 03:19 UTCEG score recompute
  15. 2026-07-08 00:12 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-53531?
CVE-2026-53531 is a medium vulnerability published on July 7, 2026. RaTeX is a KaTeX-compatible math rendering engine written in Rust. Prior to version 0.1.11, RaTeX’s recursive-descent parser recurses one (or more) native stack frame per nesting level at {, \left, \sqrt{, ^{, etc, with no maximum depth limit. A short, ~10 KB input of nested groups overflows the 8…
When was CVE-2026-53531 disclosed?
CVE-2026-53531 was first published in the National Vulnerability Database on July 7, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53531 actively exploited?
CVE-2026-53531 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 76.0% of all scored CVEs.
What is the CVSS score of CVE-2026-53531?
CVE-2026-53531 has a CVSS v3 base score of 6.9 (NVD).
How do I remediate CVE-2026-53531?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53531, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-53531

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